accessing other tab from one window
html, javascript
Solution
As far as I know, this isn't possible. The browser wouldn't allow you to manipulate the browser's lower functions in a regular environment. It would ignore it or show a security error come up.
Problem
How does the browser treat multiple tab? Are they completely separate entity where no interaction is possible? I understand the sandbox concept of the browser and other security concerns but is it possible for a webpage to interact with another tab in the browser? Basically my question is: If a user loads one webpage in a new tab, is there some way to access information of other tab which is already opened or will be opened after? I have one concept of an application which needs to know about the other tab already opened or opened after my conceptual webpage but I don't know if this is possible.